2021-04-18 15:41:13 -04:00
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// Copyright (c) 2015-2021 MinIO, Inc.
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//
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// This file is part of MinIO Object Storage stack
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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2020-10-28 12:18:35 -04:00
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package cmd
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import (
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"context"
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2020-10-30 12:33:16 -04:00
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"errors"
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2021-02-11 13:22:03 -05:00
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"fmt"
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2020-10-28 12:18:35 -04:00
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"io"
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2021-02-11 13:22:03 -05:00
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"os"
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2021-02-26 12:52:27 -05:00
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pathutil "path"
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2021-01-13 12:44:11 -05:00
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"strings"
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2020-10-28 12:18:35 -04:00
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"sync"
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2020-11-18 13:28:22 -05:00
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"time"
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2020-10-28 12:18:35 -04:00
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2021-06-01 17:59:40 -04:00
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"github.com/minio/minio/internal/logger"
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2020-10-28 12:18:35 -04:00
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)
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2021-02-11 13:22:03 -05:00
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func renameAllBucketMetacache(epPath string) error {
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// Rename all previous `.minio.sys/buckets/<bucketname>/.metacache` to
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// to `.minio.sys/tmp/` for deletion.
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2021-02-17 18:34:42 -05:00
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return readDirFn(pathJoin(epPath, minioMetaBucket, bucketMetaPrefix), func(name string, typ os.FileMode) error {
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if typ == os.ModeDir {
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2021-02-26 12:52:27 -05:00
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tmpMetacacheOld := pathutil.Join(epPath, minioMetaTmpDeletedBucket, mustGetUUID())
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2021-02-11 13:22:03 -05:00
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if err := renameAll(pathJoin(epPath, minioMetaBucket, metacachePrefixForID(name, slashSeparator)),
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tmpMetacacheOld, epPath); err != nil && err != errFileNotFound {
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2021-02-11 13:22:03 -05:00
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return fmt.Errorf("unable to rename (%s -> %s) %w",
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pathJoin(epPath, minioMetaBucket+metacachePrefixForID(minioMetaBucket, slashSeparator)),
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tmpMetacacheOld,
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osErrToFileErr(err))
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}
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}
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return nil
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})
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}
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2020-10-28 12:18:35 -04:00
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// listPath will return the requested entries.
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// If no more entries are in the listing io.EOF is returned,
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// otherwise nil or an unexpected error is returned.
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// The listPathOptions given will be checked and modified internally.
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// Required important fields are Bucket, Prefix, Separator.
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// Other important fields are Limit, Marker.
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// List ID always derived from the Marker.
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2021-07-05 18:34:41 -04:00
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func (z *erasureServerPools) listPath(ctx context.Context, o *listPathOptions) (entries metaCacheEntriesSorted, err error) {
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if err := checkListObjsArgs(ctx, o.Bucket, o.Prefix, o.Marker, z); err != nil {
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return entries, err
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}
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2023-09-25 11:13:08 -04:00
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// Marker points to before the prefix, just ignore it.
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if o.Marker < o.Prefix {
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o.Marker = ""
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}
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2020-10-28 12:18:35 -04:00
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// Marker is set validate pre-condition.
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if o.Marker != "" && o.Prefix != "" {
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// Marker not common with prefix is not implemented. Send an empty response
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if !HasPrefix(o.Marker, o.Prefix) {
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return entries, io.EOF
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}
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}
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// With max keys of zero we have reached eof, return right here.
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if o.Limit == 0 {
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return entries, io.EOF
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}
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// For delimiter and prefix as '/' we do not list anything at all
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// along // with the prefix. On a flat namespace with 'prefix'
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// as '/' we don't have any entries, since all the keys are
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// of form 'keyName/...'
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if strings.HasPrefix(o.Prefix, SlashSeparator) {
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return entries, io.EOF
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}
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// If delimiter is slashSeparator we must return directories of
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// the non-recursive scan unless explicitly requested.
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o.IncludeDirectories = o.Separator == slashSeparator
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if (o.Separator == slashSeparator || o.Separator == "") && !o.Recursive {
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o.Recursive = o.Separator != slashSeparator
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o.Separator = slashSeparator
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} else {
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// Default is recursive, if delimiter is set then list non recursive.
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o.Recursive = true
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}
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// Decode and get the optional list id from the marker.
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o.parseMarker()
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if o.BaseDir == "" {
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o.BaseDir = baseDirFromPrefix(o.Prefix)
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}
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o.Transient = o.Transient || isReservedOrInvalidBucket(o.Bucket, false)
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o.SetFilter()
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if o.Transient {
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o.Create = false
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2020-12-15 14:25:36 -05:00
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}
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2021-07-05 18:34:41 -04:00
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// We have 2 cases:
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// 1) Cold listing, just list.
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// 2) Returning, but with no id. Start async listing.
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// 3) Returning, with ID, stream from list.
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//
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// If we don't have a list id we must ask the server if it has a cache or create a new.
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if o.ID != "" && !o.Transient {
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// Create or ping with handout...
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rpc := globalNotificationSys.restClientFromHash(pathJoin(o.Bucket, o.Prefix))
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var c *metacache
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if rpc == nil {
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resp := localMetacacheMgr.getBucket(ctx, o.Bucket).findCache(*o)
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c = &resp
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} else {
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2022-08-10 10:35:29 -04:00
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rctx, cancel := context.WithTimeout(ctx, 5*time.Second)
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c, err = rpc.GetMetacacheListing(rctx, *o)
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cancel()
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}
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if err != nil {
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if errors.Is(err, context.Canceled) {
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// Context is canceled, return at once.
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// request canceled, no entries to return
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return entries, io.EOF
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}
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if !errors.Is(err, context.DeadlineExceeded) {
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2023-08-15 10:45:25 -04:00
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// Report error once per bucket, but continue listing.
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logger.LogOnceIf(ctx, err, "GetMetacacheListing:"+o.Bucket)
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}
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o.Transient = true
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o.Create = false
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o.ID = mustGetUUID()
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} else {
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if c.fileNotFound {
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// No cache found, no entries found.
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return entries, io.EOF
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}
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if c.status == scanStateError || c.status == scanStateNone {
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o.ID = ""
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o.Create = false
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o.debugln("scan status", c.status, " - waiting a roundtrip to create")
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} else {
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// Continue listing
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o.ID = c.id
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2021-09-08 14:06:45 -04:00
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go func(meta metacache) {
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// Continuously update while we wait.
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t := time.NewTicker(metacacheMaxClientWait / 10)
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defer t.Stop()
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select {
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case <-ctx.Done():
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// Request is done, stop updating.
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return
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case <-t.C:
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meta.lastHandout = time.Now()
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meta, _ = rpc.UpdateMetacacheListing(ctx, meta)
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}
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}(*c)
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}
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2020-11-03 15:47:52 -05:00
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}
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2021-07-05 18:34:41 -04:00
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}
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if o.ID != "" && !o.Transient {
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// We have an existing list ID, continue streaming.
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if o.Create {
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o.debugln("Creating", o)
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entries, err = z.listAndSave(ctx, o)
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if err == nil || err == io.EOF {
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return entries, err
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}
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entries.truncate(0)
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2020-10-28 12:18:35 -04:00
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} else {
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if o.pool < len(z.serverPools) && o.set < len(z.serverPools[o.pool].sets) {
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o.debugln("Resuming", o)
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entries, err = z.serverPools[o.pool].sets[o.set].streamMetadataParts(ctx, *o)
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2021-08-13 14:39:27 -04:00
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entries.reuse = true // We read from stream and are not sharing results.
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2021-07-05 18:34:41 -04:00
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if err == nil {
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return entries, nil
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2020-11-18 13:28:22 -05:00
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}
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2020-10-28 12:18:35 -04:00
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} else {
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2021-07-05 18:34:41 -04:00
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err = fmt.Errorf("invalid pool/set")
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o.pool, o.set = 0, 0
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}
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}
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2021-07-05 18:34:41 -04:00
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if IsErr(err, []error{
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nil,
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context.Canceled,
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context.DeadlineExceeded,
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// io.EOF is expected and should be returned but no need to log it.
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io.EOF,
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}...) {
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// Expected good errors we don't need to return error.
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return entries, err
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}
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entries.truncate(0)
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go func() {
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2022-03-25 06:41:31 -04:00
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rpc := globalNotificationSys.restClientFromHash(pathJoin(o.Bucket, o.Prefix))
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2021-12-15 12:19:11 -05:00
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if rpc != nil {
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ctx, cancel := context.WithTimeout(GlobalContext, 5*time.Second)
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defer cancel()
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c, err := rpc.GetMetacacheListing(ctx, *o)
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if err == nil {
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c.error = "no longer used"
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c.status = scanStateError
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rpc.UpdateMetacacheListing(ctx, *c)
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}
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2021-07-05 18:34:41 -04:00
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}
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}()
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o.ID = ""
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}
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// Do listing in-place.
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// Create output for our results.
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// Create filter for results.
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o.debugln("Raw List", o)
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filterCh := make(chan metaCacheEntry, o.Limit)
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listCtx, cancelList := context.WithCancel(ctx)
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2021-08-16 14:59:16 -04:00
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filteredResults := o.gatherResults(listCtx, filterCh)
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var wg sync.WaitGroup
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wg.Add(1)
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var listErr error
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go func(o listPathOptions) {
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defer wg.Done()
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2022-09-09 11:13:06 -04:00
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o.StopDiskAtLimit = true
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2021-07-05 18:34:41 -04:00
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listErr = z.listMerged(listCtx, o, filterCh)
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o.debugln("listMerged returned with", listErr)
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}(*o)
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entries, err = filteredResults()
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cancelList()
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wg.Wait()
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if listErr != nil && !errors.Is(listErr, context.Canceled) {
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return entries, listErr
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}
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2021-08-13 14:39:27 -04:00
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entries.reuse = true
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2021-07-05 18:34:41 -04:00
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truncated := entries.len() > o.Limit || err == nil
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entries.truncate(o.Limit)
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if !o.Transient && truncated {
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if o.ID == "" {
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entries.listID = mustGetUUID()
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} else {
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entries.listID = o.ID
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2020-10-28 12:18:35 -04:00
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}
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}
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2021-07-05 18:34:41 -04:00
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if !truncated {
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return entries, io.EOF
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}
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return entries, nil
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}
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2020-10-28 12:18:35 -04:00
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2021-07-05 18:34:41 -04:00
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// listMerged will list across all sets and return a merged results stream.
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// The result channel is closed when no more results are expected.
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func (z *erasureServerPools) listMerged(ctx context.Context, o listPathOptions, results chan<- metaCacheEntry) error {
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2020-10-28 12:18:35 -04:00
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var mu sync.Mutex
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var wg sync.WaitGroup
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var errs []error
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allAtEOF := true
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2021-07-05 18:34:41 -04:00
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var inputs []chan metaCacheEntry
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2020-10-28 12:18:35 -04:00
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mu.Lock()
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// Ask all sets and merge entries.
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2021-07-05 18:34:41 -04:00
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listCtx, cancelList := context.WithCancel(ctx)
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defer cancelList()
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2021-01-06 12:35:47 -05:00
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for _, pool := range z.serverPools {
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for _, set := range pool.sets {
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2020-10-28 12:18:35 -04:00
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wg.Add(1)
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2022-06-03 08:59:02 -04:00
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innerResults := make(chan metaCacheEntry, 100)
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inputs = append(inputs, innerResults)
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2020-10-28 12:18:35 -04:00
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go func(i int, set *erasureObjects) {
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defer wg.Done()
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2022-06-03 08:59:02 -04:00
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err := set.listPath(listCtx, o, innerResults)
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2020-10-28 12:18:35 -04:00
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mu.Lock()
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defer mu.Unlock()
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if err == nil {
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allAtEOF = false
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}
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errs[i] = err
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}(len(errs), set)
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errs = append(errs, nil)
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}
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}
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mu.Unlock()
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2021-07-05 18:34:41 -04:00
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2022-03-22 15:39:45 -04:00
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// Do lifecycle filtering.
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2022-08-09 18:00:24 -04:00
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if o.Lifecycle != nil || o.Replication.Config != nil {
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2022-03-22 15:39:45 -04:00
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filterIn := make(chan metaCacheEntry, 10)
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2022-08-09 18:00:24 -04:00
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go applyBucketActions(ctx, o, filterIn, results)
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2022-03-22 15:39:45 -04:00
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// Replace results.
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results = filterIn
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}
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2021-07-05 18:34:41 -04:00
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// Gather results to a single channel.
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2022-11-04 14:33:22 -04:00
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// Quorum is one since we are merging across sets.
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err := mergeEntryChannels(ctx, inputs, results, 1)
|
2021-07-05 18:34:41 -04:00
|
|
|
|
|
|
|
cancelList()
|
2020-10-28 12:18:35 -04:00
|
|
|
wg.Wait()
|
2021-07-05 18:34:41 -04:00
|
|
|
if err != nil {
|
|
|
|
return err
|
|
|
|
}
|
2022-06-03 08:59:02 -04:00
|
|
|
|
2021-07-05 18:34:41 -04:00
|
|
|
if contextCanceled(ctx) {
|
|
|
|
return ctx.Err()
|
|
|
|
}
|
2020-10-28 12:18:35 -04:00
|
|
|
|
|
|
|
if isAllNotFound(errs) {
|
2021-07-05 18:34:41 -04:00
|
|
|
return nil
|
2020-10-28 12:18:35 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
for _, err := range errs {
|
2023-02-17 04:40:31 -05:00
|
|
|
if errors.Is(err, io.EOF) {
|
2020-10-28 12:18:35 -04:00
|
|
|
continue
|
|
|
|
}
|
2023-02-17 04:40:31 -05:00
|
|
|
if err == nil || contextCanceled(ctx) || errors.Is(err, context.Canceled) {
|
|
|
|
allAtEOF = false
|
2020-10-28 12:18:35 -04:00
|
|
|
continue
|
|
|
|
}
|
|
|
|
logger.LogIf(ctx, err)
|
2021-07-05 18:34:41 -04:00
|
|
|
return err
|
2020-10-28 12:18:35 -04:00
|
|
|
}
|
2021-07-05 18:34:41 -04:00
|
|
|
if allAtEOF {
|
|
|
|
return io.EOF
|
2020-12-15 14:25:36 -05:00
|
|
|
}
|
2021-07-05 18:34:41 -04:00
|
|
|
return nil
|
|
|
|
}
|
|
|
|
|
2022-08-09 18:00:24 -04:00
|
|
|
// applyBucketActions applies lifecycle and replication actions on the listing
|
|
|
|
// It will filter out objects if the most recent version should be deleted by lifecycle.
|
|
|
|
// Entries that failed replication will be queued if no lifecycle rules got applied.
|
2022-03-22 15:39:45 -04:00
|
|
|
// out will be closed when there are no more results.
|
|
|
|
// When 'in' is closed or the context is canceled the
|
|
|
|
// function closes 'out' and exits.
|
2022-08-09 18:00:24 -04:00
|
|
|
func applyBucketActions(ctx context.Context, o listPathOptions, in <-chan metaCacheEntry, out chan<- metaCacheEntry) {
|
2022-03-22 15:39:45 -04:00
|
|
|
defer close(out)
|
2022-05-31 05:57:57 -04:00
|
|
|
|
2022-03-22 15:39:45 -04:00
|
|
|
for {
|
|
|
|
var obj metaCacheEntry
|
|
|
|
var ok bool
|
|
|
|
select {
|
|
|
|
case <-ctx.Done():
|
|
|
|
return
|
|
|
|
case obj, ok = <-in:
|
|
|
|
if !ok {
|
|
|
|
return
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2023-03-09 18:15:30 -05:00
|
|
|
var skip bool
|
2022-05-31 05:57:57 -04:00
|
|
|
|
2023-03-09 18:15:30 -05:00
|
|
|
versioned := o.Versioning != nil && o.Versioning.Versioned(obj.name)
|
2022-05-31 05:57:57 -04:00
|
|
|
|
2023-03-09 18:15:30 -05:00
|
|
|
// skip latest object from listing only for regular
|
|
|
|
// listObjects calls, versioned based listing cannot
|
|
|
|
// filter out between versions 'obj' cannot be truncated
|
|
|
|
// in such a manner, so look for skipping an object only
|
|
|
|
// for regular ListObjects() call only.
|
|
|
|
if !o.Versioned {
|
|
|
|
fi, err := obj.fileInfo(o.Bucket)
|
|
|
|
if err != nil {
|
2022-08-09 18:00:24 -04:00
|
|
|
continue
|
|
|
|
}
|
2023-03-09 18:15:30 -05:00
|
|
|
|
|
|
|
objInfo := fi.ToObjectInfo(o.Bucket, obj.name, versioned)
|
|
|
|
if o.Lifecycle != nil {
|
2023-10-06 08:55:15 -04:00
|
|
|
act := evalActionFromLifecycle(ctx, *o.Lifecycle, o.Retention, o.Replication.Config, objInfo).Action
|
2023-03-09 18:15:30 -05:00
|
|
|
skip = act.Delete()
|
|
|
|
if act.DeleteRestored() {
|
|
|
|
// do not skip DeleteRestored* actions
|
|
|
|
skip = false
|
|
|
|
}
|
|
|
|
}
|
2022-03-22 15:39:45 -04:00
|
|
|
}
|
2023-03-09 18:15:30 -05:00
|
|
|
|
|
|
|
// Skip entry only if needed via ILM, skipping is never true for versioned listing.
|
|
|
|
if !skip {
|
|
|
|
select {
|
|
|
|
case <-ctx.Done():
|
|
|
|
return
|
|
|
|
case out <- obj:
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
fiv, err := obj.fileInfoVersions(o.Bucket)
|
|
|
|
if err != nil {
|
|
|
|
continue
|
|
|
|
}
|
|
|
|
|
|
|
|
// Expire all versions if needed, if not attempt to queue for replication.
|
|
|
|
for _, version := range fiv.Versions {
|
|
|
|
objInfo := version.ToObjectInfo(o.Bucket, obj.name, versioned)
|
|
|
|
|
|
|
|
if o.Lifecycle != nil {
|
2023-10-06 08:55:15 -04:00
|
|
|
evt := evalActionFromLifecycle(ctx, *o.Lifecycle, o.Retention, o.Replication.Config, objInfo)
|
2023-03-09 18:15:30 -05:00
|
|
|
if evt.Action.Delete() {
|
2023-05-22 18:28:56 -04:00
|
|
|
globalExpiryState.enqueueByDays(objInfo, evt, lcEventSrc_s3ListObjects)
|
2023-03-09 18:15:30 -05:00
|
|
|
if !evt.Action.DeleteRestored() {
|
|
|
|
continue
|
|
|
|
} // queue version for replication upon expired restored copies if needed.
|
2023-01-27 15:43:28 -05:00
|
|
|
}
|
|
|
|
}
|
2023-03-09 18:15:30 -05:00
|
|
|
|
2023-07-13 02:51:33 -04:00
|
|
|
queueReplicationHeal(ctx, o.Bucket, objInfo, o.Replication, 0)
|
2022-03-22 15:39:45 -04:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-07-05 18:34:41 -04:00
|
|
|
func (z *erasureServerPools) listAndSave(ctx context.Context, o *listPathOptions) (entries metaCacheEntriesSorted, err error) {
|
|
|
|
// Use ID as the object name...
|
|
|
|
o.pool = z.getAvailablePoolIdx(ctx, minioMetaBucket, o.ID, 10<<20)
|
|
|
|
if o.pool < 0 {
|
|
|
|
// No space or similar, don't persist the listing.
|
|
|
|
o.pool = 0
|
|
|
|
o.Create = false
|
|
|
|
o.ID = ""
|
|
|
|
o.Transient = true
|
|
|
|
return entries, errDiskFull
|
2020-10-28 12:18:35 -04:00
|
|
|
}
|
2021-07-05 18:34:41 -04:00
|
|
|
o.set = z.serverPools[o.pool].getHashedSetIndex(o.ID)
|
|
|
|
saver := z.serverPools[o.pool].sets[o.set]
|
|
|
|
|
|
|
|
// Disconnect from call above, but cancel on exit.
|
|
|
|
listCtx, cancel := context.WithCancel(GlobalContext)
|
|
|
|
saveCh := make(chan metaCacheEntry, metacacheBlockSize)
|
|
|
|
inCh := make(chan metaCacheEntry, metacacheBlockSize)
|
|
|
|
outCh := make(chan metaCacheEntry, o.Limit)
|
|
|
|
|
2021-08-16 14:59:16 -04:00
|
|
|
filteredResults := o.gatherResults(ctx, outCh)
|
2021-07-05 18:34:41 -04:00
|
|
|
|
|
|
|
mc := o.newMetacache()
|
2022-03-25 06:41:31 -04:00
|
|
|
meta := metaCacheRPC{meta: &mc, cancel: cancel, rpc: globalNotificationSys.restClientFromHash(pathJoin(o.Bucket, o.Prefix)), o: *o}
|
2021-07-05 18:34:41 -04:00
|
|
|
|
|
|
|
// Save listing...
|
|
|
|
go func() {
|
|
|
|
if err := saver.saveMetaCacheStream(listCtx, &meta, saveCh); err != nil {
|
|
|
|
meta.setErr(err.Error())
|
|
|
|
}
|
|
|
|
cancel()
|
|
|
|
}()
|
|
|
|
|
|
|
|
// Do listing...
|
|
|
|
go func(o listPathOptions) {
|
|
|
|
err := z.listMerged(listCtx, o, inCh)
|
|
|
|
if err != nil {
|
|
|
|
meta.setErr(err.Error())
|
|
|
|
}
|
|
|
|
o.debugln("listAndSave: listing", o.ID, "finished with ", err)
|
|
|
|
}(*o)
|
|
|
|
|
2021-08-13 14:39:27 -04:00
|
|
|
// Keep track of when we return since we no longer have to send entries to output.
|
|
|
|
var funcReturned bool
|
|
|
|
var funcReturnedMu sync.Mutex
|
|
|
|
defer func() {
|
|
|
|
funcReturnedMu.Lock()
|
|
|
|
funcReturned = true
|
|
|
|
funcReturnedMu.Unlock()
|
|
|
|
}()
|
2021-07-05 18:34:41 -04:00
|
|
|
// Write listing to results and saver.
|
|
|
|
go func() {
|
2021-08-13 14:39:27 -04:00
|
|
|
var returned bool
|
2021-07-05 18:34:41 -04:00
|
|
|
for entry := range inCh {
|
2021-08-13 14:39:27 -04:00
|
|
|
if !returned {
|
|
|
|
funcReturnedMu.Lock()
|
|
|
|
returned = funcReturned
|
|
|
|
funcReturnedMu.Unlock()
|
|
|
|
outCh <- entry
|
|
|
|
if returned {
|
|
|
|
close(outCh)
|
|
|
|
}
|
|
|
|
}
|
|
|
|
entry.reusable = returned
|
2021-07-05 18:34:41 -04:00
|
|
|
saveCh <- entry
|
|
|
|
}
|
2021-08-13 14:39:27 -04:00
|
|
|
if !returned {
|
|
|
|
close(outCh)
|
|
|
|
}
|
2021-07-05 18:34:41 -04:00
|
|
|
close(saveCh)
|
|
|
|
}()
|
|
|
|
|
|
|
|
return filteredResults()
|
2020-10-28 12:18:35 -04:00
|
|
|
}
|